It is piper betel, perennial climbing herb. Like to be born in the deep mountains, thorns and thorns in the cliffs and crevices. Its fruit, rind, nuts (seeds), rhizome are good Chinese medicine. Indications: Clearing heat and removing phlegm, relieving chest pains and dispersing knots, moistening dryness and lubricating the intestines. It is used for lung-heat cough, phlegm yellowish thick, chest paralysis and heart pain, knot chest plumpness, breast carbuncle, lung carbuncle, intestinal carbuncle swelling and pain, constipation.